This top-end rebuild kit is designed for use with Honda CRF250R models from 2010 to 2016. It includes a 76.8MM stock bore piston, piston rings, and other necessary items to rebuild your engine. The piston is made with forging technology for durability and reliability, and comes with a manufacturer warranty of 6 months. This kit is ideal for those who want to maintain or enhance the performance of their Honda CRF250R. It is a brand-new, unused, unopened, and undamaged item in its original packaging. Please refer to the seller's listing for full details on the product, and feel free to contact us if you have any questions.                                                                                                                                  0EM piston RIK ring. Ceramic cylinder. gasket